Managing Tree-Caused Electric Service Interruptions

Nov. 19, 2010

What are realistic expectations for the mitigation and avoidance of tree-caused outages during major storms and during normal operating conditions? Read more...

Sig Guggenmoos

Throughout their one hundred year history, utilities have been challenged by tree-conductor conflicts. On transmission systems tree-conductor contacts can have devastating results as demonstrated by the fact that trees were involved in the last three major cascading outage events in North America. For many utilities, trees are the number one cause of unplanned distribution outages. Across the utility industry, tree-related outages commonly comprise 20% to 50% of all unplanned distribution outages. While these percentages indicate trees are a major threat to reliability, the convention of excluding outage statistics arising from severe storm events means the extent of the problem is, in fact, understated....(Read more...)

About the Author

Sig Guggenmoos | P. Ag. CPC President, Ecological Solutions Inc., Sherwood Park, Alberta, Canada

Education: Bachelor of Science in Agriculture B.Sc.(Agr.)

Accreditations: Professional Agrologist (P.Ag.); Certified Professional Consultant (CPC)

Organizations: Alberta Institute of Agrologists, International Society of Arboriculture, Utility Arborist Association, Industrial Vegetation Management Association of Alberta.

Mr. Guggenmoos was a chief architect of the TransAlta Utilities Distribution Line Clearance program, which reduced tree related outages 80%; saved 48 million dollars over two maintenance cycles; had a 98% customer satisfaction rating; and, showed a 21% increase in contractor crew productivity. He was responsible for the herbicide program, associated research and communication. In addition, he brought a financial focus to the program, developing processes for financial comparisons of alternatives to repetitive tree pruning and was intimately involved in the design and assessment of contracting methods.

As president of Ecological Solutions Inc. (Ecosync) Mr. Guggenmoos provides consulting services in vegetation management and biotic greenhouse gas mitigation strategies including biomass-derived energy.

Publications and Presentations:
Author of numerous abstracts and publications; numerous presentations to public, industry and professional associations including international conferences. List of publications available upon request.